From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>,
Michael Ellerman <mpe@ellerman.id.au>,
Sasha Levin <sashal@kernel.org>,
npiggin@gmail.com, sv@linux.ibm.com, masahiroy@kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 6.5 27/31] powerpc/85xx: Fix math emulation exception
Date: Wed, 18 Oct 2023 10:11:44 -0400 [thread overview]
Message-ID: <20231018141151.1334501-27-sashal@kernel.org> (raw)
In-Reply-To: <20231018141151.1334501-1-sashal@kernel.org>
From: Christophe Leroy <christophe.leroy@csgroup.eu>
[ Upstream commit 8e8a12ecbc86700b5e1a3596ce2b3c43dafad336 ]
Booting mpc85xx_defconfig kernel on QEMU leads to:
Bad trap at PC: fe9bab0, SR: 2d000, vector=800
awk[82]: unhandled trap (5) at 0 nip fe9bab0 lr fe9e01c code 5 in libc-2.27.so[fe5a000+17a000]
awk[82]: code: 3aa00000 3a800010 4bffe03c 9421fff0 7ca62b78 38a00000 93c10008 83c10008
awk[82]: code: 38210010 4bffdec8 9421ffc0 7c0802a6 <fc00048e> d8010008 4815190d 93810030
Trace/breakpoint trap
WARNING: no useful console
This is because allthough CONFIG_MATH_EMULATION is selected,
Exception 800 calls unknown_exception().
Call emulation_assist_interrupt() instead.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/066caa6d9480365da9b8ed83692d7101e10ac5f8.1695657339.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/kernel/head_85xx.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/head_85xx.S b/arch/powerpc/kernel/head_85xx.S
index fdbee1093e2ba..f9634111e82ed 100644
--- a/arch/powerpc/kernel/head_85xx.S
+++ b/arch/powerpc/kernel/head_85xx.S
@@ -396,7 +396,7 @@ interrupt_base:
#ifdef CONFIG_PPC_FPU
FP_UNAVAILABLE_EXCEPTION
#else
- EXCEPTION(0x0800, FP_UNAVAIL, FloatingPointUnavailable, unknown_exception)
+ EXCEPTION(0x0800, FP_UNAVAIL, FloatingPointUnavailable, emulation_assist_interrupt)
#endif
/* System Call Interrupt */
--
2.40.1
next prev parent reply other threads:[~2023-10-18 14:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-18 14:11 [PATCH AUTOSEL 6.5 01/31] Input: xpad - add HyperX Clutch Gladiate Support Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 02/31] ASoC: Intel: soc-acpi: Add entry for sof_es8336 in MTL match table Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 03/31] ASoC: Intel: sof_sdw: add support for SKU 0B14 Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 04/31] ASoC: simple-card: fixup asoc_simple_probe() error handling Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 05/31] coresight: tmc-etr: Disable warnings for allocation failures Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 06/31] ACPI: EC: Add quirk for the HP Pavilion Gaming 15-dk1xxx Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 07/31] ASoC: fsl-asoc-card: use integer type for fll_id and pll_id Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 08/31] ASoC: core: Do not call link_exit() on uninitialized rtd objects Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 09/31] ASoC: tlv320adc3xxx: BUG: Correct micbias setting Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 10/31] Input: i8042 - add Fujitsu Lifebook E5411 to i8042 quirk table Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 11/31] Input: goodix - ensure int GPIO is in input for gpio_count == 1 && gpio_int_idx == 0 case Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 12/31] workqueue: Fix UAF report by KASAN in pwq_release_workfn() Sasha Levin
2023-10-22 2:52 ` Z qiang
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 13/31] ALSA: usb-audio: Fix microphone sound on Opencomm2 Headset Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 14/31] net: sched: cls_u32: Fix allocation size in u32_init() Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 15/31] arm64: dts: imx93: add the Flex-CAN stop mode by GPR Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 16/31] can: flexcan: remove the auto stop mode for IMX93 Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 17/31] irqchip/gic-v3-its: Split allocation from initialisation of its_node Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 18/31] irqchip/gic-v3: Enable non-coherent redistributors/ITSes DT probing Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 19/31] irqchip/riscv-intc: Mark all INTC nodes as initialized Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 20/31] irqchip/stm32-exti: add missing DT IRQ flag translation Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 21/31] dmaengine: ste_dma40: Fix PM disable depth imbalance in d40_probe Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 22/31] ALSA: usb-audio: Fix microphone sound on Nexigo webcam Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 23/31] ACPI: resource: Add TongFang GM6BGEQ, GM6BG5Q and GM6BG0Q to irq1_edge_low_force_override[] Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 24/31] ata: pata_parport: add custom version of wait_after_reset Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 25/31] ata: pata_parport: fit3: implement IDE command set registers Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 26/31] net: macsec: indicate next pn update when offloading Sasha Levin
2023-10-18 14:11 ` Sasha Levin [this message]
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 28/31] media: i2c: ov8858: Don't set fwnode in the driver Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 29/31] Input: synaptics-rmi4 - handle reset delay when using SMBus trsnsport Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 30/31] Input: xpad - add PXN V900 support Sasha Levin
2023-10-18 14:11 ` [PATCH AUTOSEL 6.5 31/31] Input: powermate - fix use-after-free in powermate_config_complete Sasha Levin
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